Method and means for feeding tape



April 3, 1928. 1,664,772

R. L. DAINE METHOD AND MEANS FOR FEEDING TAPE Original Filed Feb. 4.1926 3 Sheets-Sheet 1 ATTORNEY R. L. DAINE METHOD AND MEANS FOR FEEDINGTAPE April 3, 1928.

Original Filed Feb. 4. 1926 3 Sheets-Sheet 2 l UH VENTQR.

April 3, 1928.

R. L. DAINE METHOD AND MEANS FOR FEEDING TAPE Original Filed Feb. 4.1926 3 Sheets-Sheet 3 Patented Apr. 3, 1928.

UNITED STATES' PATENT OFFICE.

ROBERT LOUIS D'AINE, 0] NEW YORK, N. Y., ASSIGNOR TO TRANS-LUZ DAYLIGHTPICTURE SCREEN CORPORATION, 01' NEW YORK, N. Y., A CORPORATION OF DELA-WARE.

METHOD AND MEANS FOR FEEDING TAPE.

Application filed February 4, 1928, Serial No. 86,107. Renewed February25, 1928.

This invention relates to a method and means for feeding a tape and moreparticularly a tape such as is commonly employed in connection with astock ticker, although not limited to use with such a device. Theinvention finds utility wherever it is desirable to convert anintermittent motion of a tape into a relatively continuous motion. Forthe purpose of illustration, however, I shall describe my invention asemployed with a stock ticker, as it has proven of particular value whenused therewith.

Apparatus has been devised whereby the tape from a stock ticker or thelike may be fed across a table or other support, from which the data onthe tape may be projected upon a screen, a suitable optical system beingprovided for this urpose. The tape is ejected by the ticker1ntermittently and, if caused to travel across the table in the samemanner and at the same rate as ejected by the ticker, that is insynchronism with the ticker, the result is an intermittent, jerkyprojection of the data upon the screen which is extremely tiresome forthe eyes and unsatisfactory for that reason and for others which will beapparent to those skilled in the art. The trouble has been avoided tosome extent by providing a feed roll to pull the tape across the table,the roll being operated by an electric motor controlled by a switchwhose operation in turn is governed by the amount of slack in a loop oftape disposed between the ticker and the table.

F When the ticker ceases operation, the arrangement is such that themotor continues its operation until it has taken up sufiicient tape toshorten the loop and open the switch thereby stopping the motor. Whenthe tick er starts its operation again, the loop increases in size untilthe switch is again closed, when the motor starts feeding the tape. Thetape is then pulled across the table until the ticker again ceases itsoperation. The motion of the tape while the motor is in operation isfairly uniform, but it is interposed between abrupt starting andstopping of the motion. When it is borne in mind that the ticker isusually started and stopped at frequent intervals, it will be seen thatthe resultant projection on the screen is still intermittent and jerky.

Therefore, the object of my invention is to rovide means that w llresult in a gradual acceleration of the motion of the tape in startingand a gradual retardation in stopping. The radual acceleration may beaccomplished by providing a device for feeding the tape across theprojection position and having a fly wheel effect. This efl'ect may beaccomplished in a number of ways as by employing a motor with a heavyarmature or one which is designed to operate at high speed. In eithercase the kinetic energy developed is relatively great.

In the accompanying drawings in which I have shown a selected embodimentof my invention:

Figure 1 is an elevation of an apparatus embodying my invention, theoptical system being shown diagrammatically in dot and dash lines.

Figure 2 is a plan view of the tape feeding device.

Figure 3 is a perspective view of the switch for controlling theoperation of the motor.

Figure 4 is a wirin diagram illustrating the operation of my d evice.

Figure 5 is a graph showing the approximate variation in speed of a tapeas actuated by means employed in the prior art.

Figure 6 is a graph similar to Figure 5 but showing the variations inthe speed of a tape when operated by my invention.

The numeral 1 designates a data recording device, such as a standardticker mechanism, shown in this case as a Vestern Union stock ticker,although the details of the mechanism are no essential part of myinvention. The ticker 1 is placed upon a heavy stand2 to allow itsaccurate placement and adjustment. The ticker is provided with thesupply roll of tape 1 which is usually transparent or translucent paperand the tape 3 from this roll passes between two feed rolls 1", 1, andthence between the guard 1' and the two hammers l", 1, being ejectedinto the pendulous loop 4. The ticker contains a type wheel 1 which isusually split in two halves perpendicular to a common axis, one of thehalves carrying letters upon its periphery and the other carryingnumerals. The two hammers 1". 1 are disposed below thesetwo wheels sothat, when either hammer is raised, the tape will be pressed against thetype wheel and receive the impression of either a numeral or a letter,depending upon which hammer is raised. The type wheel 1 is inkedcontinuously by the ink saturated felt roll 1 which is in contact withthe type wheel at all times.

In operation, the mechanism of the ticker rotates the type wheel 1'until the desired character is presented downward to the opening in theguard 1. The projecting wire 1" is then moved by a suitable mechanism,not shown, so as to engage the downward projection of either the hammer1 or the hammer 1 exclusively and is then moved upwards forcing the tape3 into contact with the type to receive the impression. The hammer isthen allowed to drop and the feed rolls 1", 19 are then actuated to feedthe tape forward by the width of one character, after which the cycle isrepeated.

The tape 3 passing out of the ticker into the loop 4 is drawn up over asupport, such as a glass table 5, by a tape feeding mechanism shown bothin Figure 1 and for a greater clarity in plan view in Figure 2. Thismechanism consists of a guide roll 6, a pressure roller 7 and a tractionroll 8 driven by the motor '9 through the worm 10 and the worm gear 11.

The loop of tape 4 supports a contact arm 12 shown in greater detail inFigure 3. The arm 12 is comparatively light and is pivoted at the point13 and, when the loop of tape is sufficiently long, drops down and makescontact with the member 14 thereby closing an electric circuit whichoperates the motor 9. Reference to Figure 4 will show how theconnections are made. Electric power is applied through the snap switch26 from any, suitable commercial power cir cuit. For convenience, thelam 15 of the projection system is also contro led by this switch. 'Thecontact between the members 12, 14 is in series with the motor 9 and isbridged by the condenser 25 to avoid s arking when the contact isbroken. The a justable resistance 27 is in series with the motor toallow a certain amount ,of-adjustinentof the pick-upspeed of the motor.

In Figure 4 I have shown the motor 9 as provided with a fly wheel 28. Asa matter of fact, however, I have found it unnecessary to employ a flywheel in order to obtain the necessary and desired acceleration of thetape. The same result may be obtained by employing a motor with arelatively heavy armature or by employing a high speed motor; In eithercase the developed kinetic energy is increased, and a fly wheel effectis obtained without the necessity of actually using the fly wheel.However, a fly wheel may be employed if found desirable.

, In order to prevent the intermittent jerky motion of the tape as itleaves the ticker from being transmitted to the tape on the table 5, Idispose a tension device adjacent the end of the table next the tickerso as to hold the tape resiliently in contact therewith. This tensiondevice is exemplified by a curved spring 29 supported as by a bracket 30and acts as a brake on the tape, the braking action being suilicient toprevent the tape from being pushed alon the table by the same forcewhich ejects it from the ticker, but being insufficient to prevent thetape from being pulled along the table by the traction roll 8.

In operation the tape is printed and ejected from the ticker in theusual manner and is fed through the projection position on the table 5by means of the traction roll 8 operated by the motor 9. The movement ofthe tape at the point where it is ejected from the ticker isintermittent and jerky. The loop 4 permits the tape to be thus ejectedintermittently but fed continuously through the projection position bythe motor driven feed, the difference in motion being taken up in theloop. The tension device exemplified by the spring 29 definitelyterminates the loop at the table 5 and effectually prevents thevariations in the loop from being transmitted to the tape on the table.These variations obviously correspond to the intermittent jerky movementcaused by the ticker, and the spring tension device prevents thismovement from reaching the table. The continuous feed is controlled byvariations in the loop in the manner described above and is started andstopped by the closing and opening respectively of the switch disposedin the loop. The motor having a fly wheel effect will cause theacceleration both at the starting and stopping of the continuous feed tobe very gradual, and the result is that the data on the tape isprojected on the screen so as to make it appear as if provided with acontinuous motion from one side of the screen to the other. Vhen themotion ceases, the stoppage is so gradual as not to, be objectionable,and similarly, when the motion starts, it does so gradually so as toavoid any appearance of jerking.

In Figures 5 and 6 I have shown contrasting graphs indicating thecomparative accelerations of two devices, the device whose operation isindicated in Figure 5 belonging to the prior art and the device whoseoperation is indicated in Figure 6 being constructed according to myinvention; The abscissas indicate time and the ordinates indicate speed.The slopes of the curves, therefore, indicate acceleration. Referring toFigure 5 it will be seen that the portions 31 and 32 of the curveindicating respectively the positive -and negative accelerations ofspeed are quite steep. this being true of ordinary motors. In Figure 6,however, the portions 33 and 34 indicating respectively the positive andnegative accelerations, when my invention is employed,

are relatively fiat and terminate in Curves,

ion

that is, the acceleration is more gradual than in the prior art. Ofcourse, it is to be understood that the curves shown are not to scaleand merely indicate the comparison between accelerations obtained by twodifferent types of devices. The horizontal portions of each curveindicate the average speed of the respective motors, the graphs beingintended solely to bring out the comparison between the accelerations.

From the above it will be apparent that I have devised a novel andimproved method and means for feeding a tape and also for projectingdata from the tape on to a screen. The practical result of my inventionis to convert an intermittent jerky motion of the tape into a motionwhich is so smooth and continuous that it may be projected upon a screenand be observed with- 'art that various out causing eye strain. Theinvention has been thoroughly tested out and put into successfulcommercial practice. While I have illustrated and described my inventionas employed in connection with a stock ticker tape, I do not desire tobe limited thereby, as it is obvious that my invention may be practicedwhenever it is desired to convert an intermittent motion of a tape intoa con tinuous motion.

It will be obvious to those skilled in the modifications in the methodand mechanism described may be made without departing from the scope ofmy invention, and I do not intend to limit myself except as by theappended claims.

I claim:

1. The method of converting an intermittent motion of a tape into acontinuous motion which consists in forming a loop in the tape where itis moving intermittently, applying a brake to the tape adjacent the endof the loop, feeding the tape from the brake with a continuous motion,and starting and stopping said continuous motion with a gradualacceleration and gradual retardation.

2. The method of converting an intermittent motion of a tape into acontinuous motion which consists in forming a loop in the tape where itis moving intermittently, applying a brake to the tape adjacent the endof the loop. feeding the tape from the brake with a continuous motion.starting and stopping said continuous motion with a gradual accelerationand gradual retardation, and rontrolling said starting and stopping byvariations in said loop.

3. The method of converting an intermittent motion of a tape into acontinuous motion which consists in applying a brake to said tape.feeding the tape to the brake with an intermittent motion. feeding thetape away from the brake with a continuous motion, and starting andstopping the continuous motion with a gradual acceleration and gradualretardation.

4. The method of converting an intermit tent motion of a tape into acontinuous motion which consists in applying a brake to,

said tape, feeding the tape to the brake with an intermittent motion,feeding the tape away from the brake with a continuous motion, startingand stopping the continuous motion with a gradual acceleration andgradual retardation and controlling said starting and stopping bymovement of the part of the tape having intermittent motion.

5. The method of projecting data from a tape which consists in ejectinga tape from a data recordin device and with an intermittent motion,eeding said tape through the projecting position with a continuousmotion, projecting upon a screen thedata on said tape, and starting andstopping said continuous feed with a gradual acceleration and gradualretardation.

6. The method of projecting data from a tape which consists in ejectinga tape from a data recording device and with an intermittent motion,feeding said tape through the projecting position with a continuousmotion, projecting upon a screen the data on said tape, starting andstopping said continuous feed with a gradual acceleration and gradualretardation, and controlling said starting and stopping by movement ofthe part of the tape having intermittent mo- Ill) said starting andstopping means being controlled by movement of the part of the tapehaving intermittent motion.

9. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion. a support across which said tape is adaptedto be fed. said tape having a loop therein between said recording deviceand said support. a tension device holding said tape against saidsupport at the end of said loop. means for feeding the tape from saidtension device with u continuous motion and means for starting andstopping said continuous feed with a gradual acceleration and gradualretardation.

10.111 combination. a recording device adapted to eject a tape therefromwith an intermittent motion, a support across which said tape is adaptedto be fed, said tape having a loop therein between said recording deviceand said support, a tension device holding said tape against saidsupport at the end of said loop, means for feeding the tape from saidtension .device with a continuous motion, means for starting andstopping said continuous feed with a gradual acceleration. and gradualretardation, and means for controlling said starting and stopping byvariations in said loop.

11. In combination. a recording device adapted to eject a tape therefromwith an intermittent motion, a support across which said tape is adaptedto be fed, a tension device holding said tape against said support,

means for feeding the tape from said ten sion device with a continuousmotion, and means for starting and stopping said continuous feed with agradual acceleration and gradual retardation.

12. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion, a support across which said tape is adaptedto be fed, a tension device holding said tape against said support,means for feeding the tape from said tension device with. a continuousmotion, means for starting and stopping said continuous feed with agradual acceleration and gradual retardation, and means for controllingsaid starting and stopping by the part of the tape between saidrecording device and said tension device.

13. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion, a support to receive said tape, a tensiondevice holding the tape against the support, and means for feeding thetape from said tension device across said support, said means comprisinga motor with a fly wheel efl'ect.

14. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion, a support to receive said tape, a tensiondevice holding the tape against the support, means for feeding the tapefrom said tension device across said support, said means comprisinga"motor with a fly wheel effect, said tape forming a loop between saidrecordingdevice and said tension device, and means operated byvariations in said loop to start and stop said motor. r

15. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion, a support to receive said tape, and meansto feed the tape across said support and comprising a motor having a flywheel efl'ect.

16. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion, a support to receive said tape, means tofeed the tape across said support and comprising a motor havin a flywheel effect, said tape forming a loop e- "on said tape, means forfeeding said tape from said tension device with a continuous motion, andmeans for starting said continuous feed with a gradual acceleration.

19. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion, a support across which said tape is adaptedto be fed, said tape having a loop therein between said recording deviceand said support, a tension device on said tape at the end of said loop,means for feeding the tape from said tension device with a continuousmotion, means for starting said continuous feed with a gradualacceleration, and means for controlling said starting by variations insaid loop.

20. The method of converting an intermittent motion of a tape into acontinuous motion which consists in applying a brake to said tape,feeding the tape to the brake with an intermittent motion, feeding thetape away from the brake with a continuous motion, and startingthecontinuous movement of the tape with a gradual acceleration.

21'. A method of projecting data from a tape which consists lnejecting atape from a data recording device with an intermittent motion, feedingsaid tape through the projecting position with a continuous motion,projecting upon a screen the data on said tape, and starting saidcontinuous feed with a gradual acceleration and controlling saidstarting of said continuous motion by variations in the part of the tapehaving an intermittent motion.

22. In combination, a data-recording device adapted to eject a tapetherefrom, a projection system, means to form a loop in said tape, alever operating on said tape whereby the tape is caused to advance whenthe tension of said tape is released, anda tension device adapted toexert a predetermined pressure on said tape and independent of saidlever.

23. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom. means for forming a loop in said tape, aprojection system, means operatedby the variations in said loop tocontrol the feed of said tape through said projection system, and atension device independent of the loop-operated means engaging said tapewhereby the intermittent jerky movement is substantially reduced.

24. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, means for forming a loop in said tape, aprojection system, means operated by the variations in said loop tocontrol the feed of said tape through said projection system, and atension device independent of the loop-operated means engaging said tapewhereby the intermittent jerky movement is substantially smoothed out,said tension device being disposed between said data-recording deviceand said rojection system.

25. In combination, a eta-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means to feed said tapethrough said projection system, and tension means independent of saidfeeding means to exert a uniform predetermined pressure on said tapewhereby the intermittent jerky motion is substantially reduced.

26. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection s stem, means for feeding said tapethroug said projection system, and means independent of the feed.mechanism to prevent the transmittal of the intermittent variations tothe tape in projecting position.

27. In combination, a data-recording device adapted to intermittentlyeject a ta e therefrom, a projection s stem, means or feeding said tapethrong said projection system, and tension means independent of the feedmechanism to prevent the transmittal of the intermittent variations inthe tape to the tape in projecting position.

28. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection s stem, means for feeding said tapethrough said projection system, and means independent of the feedmechanism exerting a predetermined pressure on said tape whereby thetransmittal of the intermittent variations is prevented.

29. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means for feeding said tapethrough said projection system, and means independent of the feedmechanism exerting a predetermined pressure on said tape whereby thetransmittal of the intermittent variations is prevented, said meansbeing dis osed between the datarecording device an the rojection system.

30. In combination, a ate-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means for feeding said tapethrough said projection system, and means independent of the feedmechanism to prevent the transmittal of the intermittent variations inthe tape, said means comprising a spring tension member.

31. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means to feed said tapethrough said projection system, and atension device independent of saidfeeding mechanism exerting a braking action on said tape, said brakingaction being suflicient to prevent the tape from being pushed throughthe syst em by the same force which ejects it from the data-recordiimdevice but insuflicient to prevent the tape from being pulled by thefeed mechanism.

32. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means to feed said tapethrough said projection system, and a tension device independent of saidfeeding mechanism and disposed between said ticker and said projectionsystem exerting a braking action on said tape, said braking action beingsuflicient to prevent the tape from being pushed through the system bythe same force which ejects it from the data-recording device butinsuflicient to prevent the tape from being pulled by the feedmechanism.

33. In combination, a data-recording device adapted to eject a tapetherefrom, means for forming a loop in said tape, a projection system,means operated by the variations in said loop to control the feed ofsaid tape through said projection system, and a tension deviceindependent of said control and feed mechanism to exert a braking effecton said tape.

34. In combination, a data-recording device adapted to eject a tapetherefrom, means for forming a loop in said tape, a projection system,means operated by the variations in said loop to control the feed ofsaid tape through said projection system, and a tension deviceindependent of said control and feed mechanism to exert a braking effecton said tape, said tension device being disposed between saiddata-recording means and said projection system.

35. In combination, a data-recording device adapted to eject a tapetherefrom, means for forming a loop in said tape, a projection system,means operated by the variations in said loop to control the feed ofsaid tape through said projection system, and a tension deviceindependent of said control and feed mechanism to exert a brakingefi'ect on said tape, said braking action being suflicient to preventthe tape from being pushed through the system by the same force whichejects it from the data-recording device but insufiicient to revent thetape from being pulled by the eed mechanism.

, for maintaining the tape and brake means in cooperat1ve relation Qwith said support to substantially reduce the 36. In combination, adata-recording device adapted to eject a tape there rom, means forforming a loop in said tape, a projection system, means operated by thevariations in said loop to control the feed of said tape through saidprojection system, and a tension device independent of said control andfeed mechanism to exert a braking effect on said tape, said tensiondevice being disposed between said data-recording means and saidprojection system, said braking action being sufficient to prevent thetape from being pushed through the system by the same force which ejectsit from the datarecording device but insuflicient to prevent the tapefrom being pulled by the feed mechanism.

37. In an apparatus for feeding a tape through a projection system,means to form a loop in said tape, a motor feed mechanism, meansoperated by the variations in said loop to control the operation of saidmotor, and means independent of said control and feeding mechanism toexert a uniform braking action on said tape adjacent the projectingposition.

38. In an apparatus for feeding a tape through a pro ection system,means to, form a loop in said tape, a motor feed mechanism, meansoperated by the variations in said loop to control the operation of saidmotor, andtension means independent of said control and feedingmechanism to exert a uniform braking action on said tape prior toprojection.

39. In combination, a ticker adapted to eject a tape therefrom with anintermittent movement, a projection system, a support for maintainingthe tape during projection, and means in cooperative relation with saidsupport to substantially reduce the inter-.

mittent jerky movement of the tape.

40. In combination, a ticker adapted to eject a tape therefrom with anintermittent movement, a. projection system, a support uring projection,

intermittent jerky movement of the tape.

41. In combination, a ticker adapted to eject a tape therefrom with anintermittent movement, a projection system, a support for maintainingthe tape uring projection, and tension means in cooperative relationwith said support to substantially smooth out the intermittent jerkymovement of the ta e.

22. In combination, a recording device adapted to eject a tape therefromwith an in termittent jerky motion, a projector, a support adjacent saidprojector, and means 1n cooperative relation with said support tosubstantially smooth out the said intermittent jerky motion into acontinuous motion. 43. In combination, a recording device adapted toeject a tape therefrom with an intermittent motion, a projector, asupport adjacent said projector, and means holding the tape in contactwith said support whereby the intermittent variations are prevented frombeing transmitted to the tape in projecting position on the support.

44. In combination, a recording device adapted to eject a tape therefromwith an intermittent motion, a projector, a support adjacent saidprojection system, and tension means holding the ta e in contact withsaid support whereby the intermittent variations are prevented frombeing transmitted to the tape in projecting position on the support.

45. In combination, a data-recording device, a projection system, meansfor feeding a tape therethrough, said feeding means comprising a motorand a. switch element carried by said tape adapted to make and break acircuit whereby said motor is started and stopped.

46. In combination, a data-recording device, a projection apparatus, andmeans to feed the tape therethrough, said means comprising a motor and aswitch element controlled by the variations in a loop of the tape andadapted to close and open a circuit whereby the motoriis started andstopped.

47. In combination, a data-recording device, a projection apparatus,means for feeding a tape therethrough, said feeding means comprising amotor and a switch element carried b said tape adapted to make and breaka circuit whereby said motor is started and stopped, and meansindependent of said feeding means to effect a braking action on saidtape.

48. In combination, a data-recording device, a projection system, meansfor feeding a tape therethrough, said feeding means comprising a motorand a switch element carried by said tape ada ted to make and break acircuit whereby t e motor is started and stopped, and means adjacent thepro jection system and independent of said feeding means to effect abraking action on said tape, said means comprising a spring tension memr. r

49. In combination, a data-recording device, a projection system, meansfor feeding a tape therethrough, said feeding means comprising a motorand a switch element carried by said tape adapted to make and break acircuit whereby said motor is started and stopped, and it meansindependent of said feeding means to effect a brakin action on saidtape, said braking action eing insufficient to prevent the feedin of thetape through the system by said feeding means.

50. In com ination, a data-recording device adapted td intermittentlyeject a tape therefrom, a. projection system, means to feed said tapethrough said projection system, and tension means to exert a uniformpre'determined pressure on said tape whereby the intermittent jerkymotion is substantially reduced.

51. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means for feeding said tapethrough said projection system, and means exerting a predeterminedpressure on said tape whereby the transmittal of intermittent variationsis prevented, said means being disposed between the datareeording deviceand the projection system.

52. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system. means for feeding said tapethrough said projection system, and means 'to prevent a transmittal ofthe intermittent variations in the tape, said means comprising a springtension member.

53. In combination, a data-recording device adapted to eject a tapetherefrom, means for forming a loop in said tape, a projection system,means operated by the variations in said loop to control the feed ofsaid tape through said projection system. and a tension member to exerta braking effect on said tape, said tension device being disposedbetween said data-recording means and said projection system.

54. In combination, a data-recording device, a projection system, meansfor feeding a tape therefrom, said feeding means comprising a motor anda switch element carried by said tape adapted to make and break acircuit whereby sald motor is started and stopped, and means adjacentthe projection system and independent of said feeding means to effect abraking action on said tape, said means comprising a spring tensionmember.

55. In combination, a data-recording device adapted to eject a tapetherefrom, a projection system, means to form a loop in said tape, alever operating on said tape whereby the tape is caused to advance whenthe ten-- sion of said tape is released, and a tension device adapted toexert a predetermined pressure on said tape adjacent said loop.

56. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means to feed said tapethrough said projection system, said feeding means includin a motorhaving a fly wheel efl'ecaand tension means independent of said feedingmeans to exert a uniform predetermined pressure on said tape whereby theintermittent jerky motion is substantially reduced.

57. In combination, a data-recording device adapted to intermittentlyeject a tape therethrough, a projection system, means for feeding saidtape through said projection system, said means including a motor havinga fly wheel effect, and means independent of the feed mechanism toprevent a transmittal of the intermittent variations in the tape, saidmeans comprising a spring tension member.

In testimony whereof, I have ailixed my signature to this specification.

ROBERT LOUIS DAINE.

DISCLAIMER.

Tarn. Patent dated April 3, 1928.

patentee, assignee, Trans-Luca Daylight Picture Screen Corporation,

Hereb [Oflcml Gazette August 28, 1928.]

Mn'rnoo AND MEANS non FEEDING Disclaimer filed August 11, 1928, by theconsenting.

enters this disclaimer to claims Nos. 1-57, inclusive, of said patent.

pre'determined pressure on said tape whereby the intermittent jerkymotion is substantially reduced.

51. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means for feeding said tapethrough said projection system, and means exerting a predeterminedpressure on said tape whereby the transmittal of intermittent variationsis prevented, said means being disposed between the datareeording deviceand the projection system.

52. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system. means for feeding said tapethrough said projection system, and means 'to prevent a transmittal ofthe intermittent variations in the tape, said means comprising a springtension member.

53. In combination, a data-recording device adapted to eject a tapetherefrom, means for forming a loop in said tape, a projection system,means operated by the variations in said loop to control the feed ofsaid tape through said projection system. and a tension member to exerta braking effect on said tape, said tension device being disposedbetween said data-recording means and said projection system.

54. In combination, a data-recording device, a projection system, meansfor feeding a tape therefrom, said feeding means comprising a motor anda switch element carried by said tape adapted to make and break acircuit whereby sald motor is started and stopped, and means adjacentthe projection system and independent of said feeding means to effect abraking action on said tape, said means comprising a spring tensionmember.

55. In combination, a data-recording device adapted to eject a tapetherefrom, a projection system, means to form a loop in said tape, alever operating on said tape whereby the tape is caused to advance whenthe ten-- sion of said tape is released, and a tension device adapted toexert a predetermined pressure on said tape adjacent said loop.

56. In combination, a data-recording device adapted to intermittentlyeject a tape therefrom, a projection system, means to feed said tapethrough said projection system, said feeding means includin a motorhaving a fly wheel efl'ecaand tension means independent of said feedingmeans to exert a uniform predetermined pressure on said tape whereby theintermittent jerky motion is substantially reduced.

57. In combination, a data-recording device adapted to intermittentlyeject a tape therethrough, a projection system, means for feeding saidtape through said projection system, said means including a motor havinga fly wheel effect, and means independent of the feed mechanism toprevent a transmittal of the intermittent variations in the tape, saidmeans comprising a spring tension member.

In testimony whereof, I have ailixed my signature to this specification.

ROBERT LOUIS DAINE.

DISCLAIMER.

Tarn. Patent dated April 3, 1928.

patentee, assignee, Trans-Luca Daylight Picture Screen Corporation,

Hereb [Oflcml Gazette August 28, 1928.]

Mn'rnoo AND MEANS non FEEDING Disclaimer filed August 11, 1928, by theconsenting.

enters this disclaimer to claims Nos. 1-57, inclusive, of said patent.

